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Finding the Fourth Proportional to 110,223.20, 165,334.80 and 65,986.40

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Solution

The fourth proportional to 110,223.20, 165,334.80 and 65,986.40 is: 98,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,223.20 : 165,334.80 = 65,986.40 : x
  2. Step 2: Convert to fraction form
    110,223.20/165,334.80 = 65,986.40/x
  3. Step 3: Cross multiply
    110,223.20x = 165,334.80 × 65,986.40
  4. Step 4: Simplify right side
    110,223.20x = 10,909,848,246.72
  5. Step 5: Solve for x
    x = 10,909,848,246.72/110,223.20
  6. Step 6: Final answer
    x = 98,979.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.